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-rw-r--r--kernel/trace/trace.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index fd6e1b906b3c..9541c27c1cf2 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -779,6 +779,11 @@ __acquires(kernel_lock)
tracing_reset_online_cpus(tr);
current_trace = type;
+
+ /* If we expanded the buffers, make sure the max is expanded too */
+ if (ring_buffer_expanded && type->use_max_tr)
+ ring_buffer_resize(max_tr.buffer, trace_buf_size);
+
/* the test is responsible for initializing and enabling */
pr_info("Testing tracer %s: ", type->name);
ret = type->selftest(type, tr);
@@ -791,6 +796,10 @@ __acquires(kernel_lock)
/* Only reset on passing, to avoid touching corrupted buffers */
tracing_reset_online_cpus(tr);
+ /* Shrink the max buffer again */
+ if (ring_buffer_expanded && type->use_max_tr)
+ ring_buffer_resize(max_tr.buffer, 1);
+
printk(KERN_CONT "PASSED\n");
}
#endif